shows Roop crafting puppet figures
Black characters and animals
"Among [Willis] O'Brien's animation assistants on The Lost World was Los Angeles sculptor J. L. Roop, of whom the Museum's Seaver Center for Western History Research maintains a collection of scrapbooks, photographs, articles and other items. One of Roop's models from The Lost World is housed in the Museum's History Department. Three years following The Lost World, Roop did the rather crude special dinosaur effects for The Lost Whirl, a comedy inspired by (but not really based on) the original film."